// Copyright 2022 ByteDance Ltd. and/or its affiliates.
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
#pragma once

#include <type_traits>

namespace matxscript {
namespace runtime {
namespace {

template <class...>
using __my_void_t_for_hash__ = void;

template <typename T, typename = __my_void_t_for_hash__<>>
struct is_std_hashable : std::false_type {};

template <typename T>
struct is_std_hashable<
    T,
    __my_void_t_for_hash__<decltype(std::declval<std::hash<T>>()(std::declval<T>()), void())>>
    : std::true_type {};

}  // namespace
}  // namespace runtime
}  // namespace matxscript
